A rubber processing injection machine

Abstract

The present invention discloses a rubber processing injection machine, specifically relates to the technical field of injection machines, including: a base, a support platform is fixed at one end of the top of the base, and a molding mold assembly is provided on the top of the base, and a movable movable seat is connected to the top of the support platform. The present invention sets an injection sealing mechanism, and the injection sealing mechanism is composed of components such as a first retaining ring, a second retaining ring, a movable ring, an arc plate and a linkage assembly. After the nozzle and the injection tube are plugged in, the first retaining ring on the injection tube can be tightly in contact with the second retaining ring on the nozzle, and the movable ring is embedded between the first retaining ring and the second retaining ring. At the same time, four arc plates are gathered and formed into a circular ring wrapped between the outer sides of the first retaining ring and the second retaining ring, and the silicone pad on the inner side of the arc plate is pressed against the outer side wall, thereby achieving effective sealing after the nozzle and the injection tube are docked, avoiding leakage of molten plastic or mixing of a large amount of external air, and having a good use effect.

Description

Technical Field

[0001] The invention relates to the technical field of injection machines, in particular to a rubber processing injection machine. Background Art

[0002] Injection molding machine is also called injection molding machine or injection molding machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. Its working process is mainly to inject the plasticized molten plastic into the closed mold cavity with the help of the thrust of the screw or plunger, and finally obtain the product after solidification.

[0003] At present, when a rubber processing injection machine is in use, it is usually necessary to dock the nozzle on the injection device with the injection port on the injection mold, and the docking injection is often carried out by direct plug-in. However, a gap is likely to remain after the nozzle and the injection port are plugged in, making it difficult to ensure effective sealing after docking, which makes it very easy for the molten plastic to leak out or mix in a large amount of outside air, which greatly affects the safety of the injection machine and the quality of rubber processing. Summary of the invention

[0004] The object of the present invention is to provide a rubber processing injection machine, which is provided with an injection sealing mechanism, and the injection sealing mechanism is composed of components such as a first baffle ring, a second baffle ring, a movable ring, an arc plate and a linkage assembly. After the nozzle and the injection molding tube are plugged in, the first baffle ring on the injection molding tube can be tightly in contact with the second baffle ring on the nozzle, and the movable ring is embedded between the first baffle ring and the second baffle ring. At the same time, the four arc plates are gathered and formed into a circular ring wrapped between the outer sides of the first baffle ring and the second baffle ring, and the silicone pad on the inner side of the arc plate is pressed against the outer side wall, thereby achieving effective sealing after the nozzle and the injection molding tube are connected, avoiding leakage of molten plastic or mixing of a large amount of external air, and having a better use effect, so as to solve the above-mentioned shortcomings in the technology.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a rubber processing injection machine, comprising:

[0006] A base, a support platform is fixed at one end of the top of the base, a molding die assembly is provided at the top of the base, a movable moving seat is connected to the top of the support platform, an injection device is provided at the top of the moving seat, a driving assembly is provided at one end of the support platform, and the driving assembly is used to drive the moving seat to move;

[0007] The molding die assembly comprises a lower die and an upper die, wherein the upper die is located above the lower die, a supporting component is provided between the upper die and the lower die, and an injection tube is provided on one side of the upper die;

[0008] The injection device comprises a feed pipe fixedly connected to the top side of the movable seat, one end of the feed pipe is connected to a nozzle facing the injection pipe, the nozzle is movably inserted in the injection pipe, and an injection sealing mechanism is provided between the nozzle and the injection pipe.

[0009] Preferably, the supporting component includes columns connected through the four ends of the upper mold, the bottom ends of the four columns are fixedly connected to the lower mold, and a top plate is connected between the top ends of the four columns, a hydraulic cylinder is fixed on the top of the top plate, and the bottom end of the hydraulic cylinder passes through the top plate and is connected to the upper mold.

[0010] Preferably, the injection device also includes a screw rotatably connected to the feed pipe, a drive motor is fixed to one end of the feed pipe relative to the nozzle, an output end of the drive motor extends into the nozzle and is connected to the screw, and a barrel is connected to the top of one end of the feed pipe close to the drive motor.

[0011] Preferably, the driving assembly includes a cylinder fixedly connected to the end of the support platform, a slide groove is provided on the top of the support platform, a slider is slidably connected inside the slide groove, the output end of the cylinder extends into the slide groove and is fixedly connected to the slider, and the top of the slider is fixedly connected to the moving seat.

[0012] Preferably, the injection sealing mechanism comprises a second retaining ring fixedly connected to the middle of the nozzle, the end of the injection tube is connected to the first retaining ring, the end of the nozzle close to the first retaining ring is sleeved with a movable ring, one side of the second retaining ring is provided with a first clamping groove matching the movable ring, one side of the first retaining ring is provided with a second clamping groove matching the movable ring, and the movable ring can be embedded between the first clamping groove and the second clamping groove;

[0013] The four outer ends of the second retaining ring are fixed with fixing columns, the side walls of the fixing columns are provided with guide grooves, the inside of the guide grooves are slidably connected with guide bars, the inner sides of the four guide bars are fixed with arc plates facing the second retaining ring, the inner sides of the arc plates are connected with silicone pads, and a linkage component is provided between the movable ring and the arc plate.

[0014] Preferably, the linkage assembly includes a transmission ring mounted outside the nozzle relative to one end of the movable ring, the four ends of the side wall of the second retaining ring are penetrated by connecting rods, one end of the connecting rod is fixedly connected to the movable ring, and the other end of the connecting rod is fixedly connected to the transmission ring, a first spring is connected to the outer wall of the connecting rod and located between the transmission ring and the second retaining ring, the ends of the four guide bars are rotatably connected to the transmission ring with connecting arms through a rotating shaft, and the two ends of the first spring are respectively fixedly connected to the transmission ring and the second retaining ring.

[0015] Preferably, two fixed seats are symmetrically connected to one side of the upper mold near the bottom of the injection molding tube, a limiting rod is fixed between the two fixed seats, both ends of the limiting rod are symmetrically connected to limiting columns, protective covers are symmetrically fixed to the tops of the two limiting columns, and the injection molding tube and the first retaining ring cover are arranged in the two protective covers, a moving component is provided on the limiting rod, and the moving component is used to drive the two protective covers to move toward or away from each other.

[0016] Preferably, the moving assembly includes a second spring symmetrically mounted on both ends of the limiting rod, one end of the second spring is fixedly connected to the limiting column, and the other end of the second spring is fixedly connected to the fixed seat, the side walls of the two limiting columns are rotatably connected to positioning arms via a rotating shaft, the two positioning arms are rotatably connected to a positioning block between one end of the limiting column via a rotating shaft, and a positioning rod facing the positioning block is fixed to one end of the moving seat.

[0017] Preferably, a heat preservation chamber is provided between the inner side and the outer side of the barrel, and a heating wire is provided in the heat preservation chamber.

[0018] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0019] By setting an injection sealing mechanism, and the injection sealing mechanism is composed of components such as a first retaining ring, a second retaining ring, a movable ring, an arc plate and a linkage assembly, after the nozzle and the injection molding tube are plugged in, the first retaining ring on the injection molding tube can be tightly in contact with the second retaining ring on the nozzle, and the movable ring is tightly embedded between the first retaining ring and the second retaining ring, and at the same time, the four arc plates are gathered and formed into a circular ring wrapped between the outer sides of the first retaining ring and the second retaining ring, and the silicone pad on the inner side of the arc plate is tightly pressed against the outer side wall, thereby achieving effective sealing after the nozzle and the injection molding tube are docked, avoiding leakage of molten plastic or mixing of a large amount of external air, and having a good use effect;

[0020] By symmetrically arranging two protective covers at the injection molding tube, and with the cooperation of components such as the limit column, the second spring and the moving assembly, when the moving seat drives the injection device to move toward the molding mold assembly for docking, the limit column can drive the two protective covers to quickly separate to expose the injection molding tube, and when the moving seat drives the injection device to move in the opposite direction, the nozzle and the injection molding tube can automatically release the sealed and fastened state of docking, and at the same time, the two protective covers automatically close and cover the injection molding tube and the first retaining ring, thereby realizing the protection of the injection molding tube inlet end, greatly improving the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is one of the overall structural schematic diagrams of the present invention;

[0023] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the upper mold and the protective cover when connected to the present invention;

[0025] Figure 4 It is a schematic diagram of the connection structure between the upper mold and the injection molding tube of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the support platform and the sliding block of the present invention when they are connected;

[0027] Figure 6 It is a schematic diagram of the connection structure between the limit rod and the protective cover of the present invention;

[0028] Figure 7 It is a schematic diagram of the connection structure between the injection device and the injection sealing mechanism of the present invention;

[0029] Figure 8 This is a schematic diagram of the internal structure of the feed conveying pipe of the present invention;

[0030] Fig. 9 This is one of the structural schematic diagrams of the connection between the nozzle and the injection sealing mechanism of the present invention;

[0031] Fig.10 The second structural schematic diagram of the connection between the nozzle and the injection sealing mechanism of the present invention;

[0032] Fig.11 A longitudinal sectional view of the connection between the nozzle and the injection sealing mechanism of the present invention;

[0033] Fig.12 It is a schematic diagram of the connection structure between the movable ring and the transmission ring of the present invention;

[0034] Fig.13 It is a structural schematic diagram of the connection between the nozzle and the fixing ring of the present invention;

[0035] Fig.14 It is a schematic diagram of the internal structure of the barrel of the present invention.

[0036] Description of reference numerals:

[0037] 1. Base; 2. Support table; 3. Moving seat; 4. Feed pipe; 5. Cylinder; 6. Nozzle; 7. Screw; 8. Driving motor; 9. Lower mold; 10. Column; 11. Hydraulic cylinder; 12. Upper mold; 13. Cylinder; 14. Slide; 15. Slider; 16. Injection tube; 17. First retaining ring; 18. Second retaining ring; 19. Movable ring; 20. Connecting rod; 21. Transmission ring; 22. First spring; 23. Connecting arm; 24. Fixed column; 25. Guide groove; 26. Guide strip; 27. Arc plate; 28. Silicone pad; 29. ​​First slot; 30. Second slot; 31. Fixed seat; 32. Limit rod; 33. Limit column; 34. Second spring; 35. Protective cover; 36. Positioning arm; 37. Positioning block; 38. Positioning rod; 39. Top plate; 40. Heating wire. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] The present invention provides Figure 1-Figure 2 , Figure 4-Figure 5 and Figure 7-Figure 14 A rubber processing injection machine shown includes:

[0040] A base 1, a support platform 2 is fixed at one end of the top of the base 1, and a molding mold assembly is provided on the top of the base 1, a movable moving seat 3 is connected to the top of the support platform 2, an injection device is provided on the top of the moving seat 3, and a driving assembly is provided at one end of the support platform 2, and the driving assembly is used to drive the moving seat 3 to move;

[0041] The driving assembly includes a cylinder 13 fixedly connected to the end of the support platform 2, a slide groove 14 is provided on the top of the support platform 2, a slider 15 is slidably connected inside the slide groove 14, the output end of the cylinder 13 extends into the slide groove 14 and is fixedly connected to the slider 15, and the top end of the slider 15 is fixedly connected to the moving seat 3.

[0042] The molding die assembly includes a lower die 9 and an upper die 12, the upper die 12 is located above the lower die 9, a supporting component is provided between the upper die 12 and the lower die 9, and an injection tube 16 is provided on one side of the upper die 12;

[0043] The supporting component includes columns 10 that pass through and are connected to the four ends of the upper mold 12. The bottom ends of the four columns 10 are fixedly connected to the lower mold 9, and a top plate 39 is connected between the top ends of the four columns 10. A hydraulic cylinder 11 is fixed on the top of the top plate 39. The bottom end of the hydraulic cylinder 11 passes through the top plate 39 and is connected to the upper mold 12.

[0044] By starting the hydraulic cylinder 11, the hydraulic cylinder 11 can drive the upper mold 12 to move along the column 10, and by controlling the lifting of the upper mold 12, the upper mold 12 and the lower mold 9 can be controlled to close or separate.

[0045] The injection device includes a feed pipe 4 fixedly connected to the top side of the movable seat 3, one end of which is connected to a nozzle 6 facing the injection tube 16. The nozzle 6 is movably inserted in the injection tube 16, and an injection sealing mechanism is provided between the nozzle 6 and the injection tube 16.

[0046] The injection device also includes a screw 7 rotatably connected to the feed pipe 4, a drive motor 8 is fixed to one end of the feed pipe 4 relative to the nozzle 6, the output end of the drive motor 8 extends into the nozzle 6 and is connected to the screw 7, and a barrel 5 is connected to the top of one end of the feed pipe 4 close to the drive motor 8.

[0047] A heat preservation chamber is provided between the inner side and the outer side of the barrel 5, and a heating wire 40 is provided in the heat preservation chamber.

[0048] The plastic in the barrel 5 can be heated and melted by the heating wire 40 .

[0049] After the upper mold 12 and the lower mold 9 are closed, the slide block 15 can be driven by the cylinder 13 to slide in the slide groove 14, and then the slide block 15 drives the moving seat 3 to move on the support platform 2, so that the moving seat 3 drives the injection device to move to the upper mold 12, and then the nozzle 6 on the injection device is inserted into the injection tube 16 to achieve docking;

[0050] The molten plastic can be introduced into the feed pipe 4 through the barrel 5, and then the driving motor 8 drives the screw 7 to rotate, so that the screw 7 drives the molten plastic to move forward in the feed pipe 4, so that the molten plastic can be ejected from the nozzle 6 at a certain pressure and speed, and then the molten plastic enters the mold cavity through the injection tube 16. After the molten plastic is solidified and shaped in the mold cavity, the mold is controlled to be separated to obtain a rubber product.

[0051] The injection sealing mechanism includes a second retaining ring 18 fixedly connected to the middle of the nozzle 6, a first retaining ring 17 is connected to the end of the injection tube 16, a movable ring 19 is sleeved on one end of the nozzle 6 close to the first retaining ring 17, a first clamping groove 29 matching the movable ring 19 is opened on one side of the second retaining ring 18, a second clamping groove 30 matching the movable ring 19 is opened on one side of the first retaining ring 17, and the movable ring 19 can be embedded between the first clamping groove 29 and the second clamping groove 30;

[0052] The four outer ends of the second retaining ring 18 are fixed with fixing columns 24, the side walls of the fixing columns 24 are provided with guide grooves 25, the inside of the guide grooves 25 is slidably connected with guide bars 26, the inner sides of the four guide bars 26 are fixed with arc plates 27 facing the second retaining ring 18, the inner sides of the arc plates 27 are connected with silicone pads 28, and a linkage component is provided between the movable ring 19 and the arc plates 27.

[0053] The linkage assembly includes a transmission ring 21 which is sleeved on the outside of the nozzle 6 relative to one end of the movable ring 19. The four ends of the side wall of the second retaining ring 18 are penetrated and connected with connecting rods 20. One end of the connecting rod 20 is fixedly connected to the movable ring 19, and the other end of the connecting rod 20 is fixedly connected to the transmission ring 21. A first spring 22 is connected to the outer wall of the connecting rod 20 and is located between the transmission ring 21 and the second retaining ring 18. The ends of the four guide bars 26 are rotatably connected to the transmission ring 21 by a connecting arm 23 through a rotating shaft. The two ends of the first spring 22 are respectively fixedly connected to the transmission ring 21 and the second retaining ring 18.

[0054] When the present invention is used, during the process of inserting the nozzle 6 into the injection tube 16, the first retaining ring 17 on the injection tube 16 can squeeze the movable ring 19 to move on the outside of the nozzle 6, and then the movable ring 19 can drive the connecting rod 20 to slide on the second retaining ring 18, so that the connecting rod 20 drives the transmission ring 21 to move along the nozzle 6, and then the transmission ring 21 simultaneously pulls the multiple connecting arms 23 to move and stretch the first spring 22, so that the connecting arms 23 drive the guide bar 26 to slide in the guide groove 25 in the fixed column 24, and then the guide bar 26 drives the arc plate 27 to move, so that the arc plate 27 drives the silicone pad 28 to move;

[0055] When the nozzle 6 is fully inserted into the injection molding tube 16, the first retaining ring 17 on the injection molding tube 16 can conflict with the second retaining ring 18 on the nozzle 6, and the movable ring 19 is tightly embedded in the first clamping groove 29 and the second clamping groove 30 between the first retaining ring 17 and the second retaining ring 18 to achieve a close connection between the injection molding tube 16 and the nozzle 6. At the same time, the four arc plates 27 are gathered and formed into a circular ring wrapped between the outer sides of the first retaining ring 17 and the second retaining ring 18, and the silicone pad 28 on the inner side of the arc plate 27 is pressed against the outer side wall to further encrypt the nozzle 6. Under the double encryption of inside and outside, the nozzle 6 can be effectively sealed after the injection molding tube 16 is connected, which avoids the leakage of molten plastic or the mixing of a large amount of external air, and the use effect is better.

[0056] The present invention provides Figure 2 , Figure 3 and Figure 6 A rubber processing injection machine is shown, in which two fixed seats 31 are symmetrically connected to one side of the upper mold 12 near the bottom of the injection tube 16, a limit rod 32 is fixed between the two fixed seats 31, and the two ends of the limit rod 32 are symmetrically connected to the limit columns 33, and protective covers 35 are symmetrically fixed to the top of the two limit columns 33, and the injection tube 16 and the first baffle ring 17 are covered in the two protective covers 35, and a moving component is provided on the limit rod 32, and the moving component is used to drive the two protective covers 35 to move toward or away from each other.

[0057] The moving assembly includes a second spring 34 symmetrically sleeved on both ends of the limiting rod 32, one end of the second spring 34 is fixedly connected to the limiting column 33, and the other end of the second spring 34 is fixedly connected to the fixed seat 31, the side walls of the two limiting columns 33 are rotatably connected to the positioning arms 36 through a rotating shaft, and the two positioning arms 36 are rotatably connected to a positioning block 37 between one end of the limiting column 33 through a rotating shaft, and a positioning rod 38 facing the positioning block 37 is fixed at one end of the moving seat 3.

[0058] When the moving seat 3 drives the injection device to move toward the molding die assembly, the positioning rod 38 on the moving seat 3 can first contact the positioning block 37, so that the positioning block 37 drives the two positioning arms 36 to rotate, and then the positioning arm 36 drives the limiting column 33 to slide on the limiting rod 32, so that the limiting column 33 squeezes the second spring 34 and drives the protective cover 35 to move, so that the two protective covers 35 can be quickly separated to expose the injection tube 16, and then the nozzle 6 and the injection tube 16 are docked for injection;

[0059] In addition, when the movable seat 3 drives the injection device away from the molding mold assembly, as the nozzle 6 pulls out the injection tube 16, the four arc plates 27 can be opened under the reset of the first spring 22 to release the sealed and fastened state of the docking, and under the rebound of the second spring 34, the limit column 33 can drive the two protective covers 35 to close quickly and cover the injection tube 16 and the first baffle ring 17, thereby realizing the protection of the inlet end of the injection tube 16, greatly improving the safety of the equipment.

[0060] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rubber processing injection machine, characterized in that: include: A base (1), a support platform (2) is fixed to one end of the top of the base (1), a molding die assembly is provided on the top of the base (1), a movable moving seat (3) is connected to the top of the support platform (2), an injection device is provided on the top of the moving seat (3), a driving assembly is provided at one end of the support platform (2), and the driving assembly is used to drive the moving seat (3) to move; The molding die assembly comprises a lower die (9) and an upper die (12), wherein the upper die (12) is located above the lower die (9), a supporting component is provided between the upper die (12) and the lower die (9), and an injection tube (16) is provided on one side of the upper die (12); The injection device comprises a material delivery pipe (4) fixedly connected to the top side of the movable seat (3), one end of the material delivery pipe (4) is connected to a nozzle (6) facing the injection tube (16), the nozzle (6) is movably inserted in the injection tube (16), and an injection sealing mechanism is provided between the nozzle (6) and the injection tube (16); The injection sealing mechanism comprises a second retaining ring (18) fixedly connected to the middle of the nozzle (6); the end of the injection tube (16) is connected to the first retaining ring (17); an end of the nozzle (6) close to the first retaining ring (17) is sleeved with a movable ring (19); one side of the second retaining ring (18) is provided with a first retaining groove (29) matching the movable ring (19); one side of the first retaining ring (17) is provided with a second retaining groove (30) matching the movable ring (19); and the movable ring (19) can be embedded between the first retaining groove (29) and the second retaining groove (30); The four ends of the outer side of the second retaining ring (18) are all fixed with fixing columns (24), the side wall of the fixing column (24) is provided with a guide groove (25), the inside of the guide groove (25) is slidably connected with a guide bar (26), the inner side of the four guide bars (26) are all fixed with an arc plate (27) facing the second retaining ring (18), the inner side of the arc plate (27) is connected with a silicone pad (28), and a linkage component is provided between the movable ring (19) and the arc plate (27); The linkage assembly comprises a transmission ring (21) sleeved on the outside of the nozzle (6) and opposite to one end of the movable ring (19); four ends of the side wall of the second retaining ring (18) are penetrated and connected with connecting rods (20); one end of the connecting rod (20) is fixedly connected to the movable ring (19), and the other end of the connecting rod (20) is fixedly connected to the transmission ring (21); the outer wall of the connecting rod (20) and located between the transmission ring (21) and the second retaining ring (18) are connected with a first spring (22); the ends of the four guide bars (26) are rotatably connected to the transmission ring (21) by connecting arms (23) via a rotating shaft; and the two ends of the first spring (22) are respectively fixedly connected to the transmission ring (21) and the second retaining ring (18).

2. A rubber processing injection machine according to claim 1, characterized in that: The supporting component comprises columns (10) penetrating and connected to the four ends of the upper mold (12); the bottom ends of the four columns (10) are fixedly connected to the lower mold (9); a top plate (39) is connected between the top ends of the four columns (10); a hydraulic cylinder (11) is fixed to the top of the top plate (39); and the bottom end of the hydraulic cylinder (11) passes through the top plate (39) and is connected to the upper mold (12).

3. A rubber processing injection machine according to claim 1, characterized in that: The injection device further comprises a screw (7) rotatably connected to a feed pipe (4); a drive motor (8) is fixed to one end of the feed pipe (4) opposite to the nozzle (6); an output end of the drive motor (8) extends into the nozzle (6) and is connected to the screw (7); and a barrel (5) is connected to the top of one end of the feed pipe (4) close to the drive motor (8).

4. A rubber processing injection machine according to claim 1, characterized in that: The driving assembly comprises a cylinder (13) fixedly connected to the end of a support platform (2); a slide groove (14) is provided on the top of the support platform (2); a slider (15) is slidably connected inside the slide groove (14); an output end of the cylinder (13) extends into the slide groove (14) and is fixedly connected to the slider (15); and a top end of the slider (15) is fixedly connected to the moving seat (3).

5. A rubber processing injection machine according to claim 1, characterized in that: Two fixed seats (31) are symmetrically connected to one side of the upper mold (12) near the bottom of the injection molding tube (16); a limit rod (32) is fixed between the two fixed seats (31); both ends of the limit rod (32) are symmetrically connected to limit columns (33); protective covers (35) are symmetrically fixed to the tops of the two limit columns (33); the injection molding tube (16) and the first retaining ring (17) are covered in the two protective covers (35); a moving component is provided on the limit rod (32), and the moving component is used to drive the two protective covers (35) to move towards or away from each other.

6. A rubber processing injection machine according to claim 5, characterized in that: The moving assembly comprises a second spring (34) symmetrically sleeved on both ends of the limiting rod (32), one end of the second spring (34) being fixedly connected to the limiting column (33), and the other end of the second spring (34) being fixedly connected to the fixing seat (31), the side walls of the two limiting columns (33) being rotatably connected to positioning arms (36) via a rotating shaft, a positioning block (37) being rotatably connected between one end of the two positioning arms (36) relative to the limiting column (33) via a rotating shaft, and a positioning rod (38) facing the positioning block (37) being fixed to one end of the moving seat (3).

7. A rubber processing injection machine according to claim 3, characterized in that: A heat preservation cavity is provided between the inner side and the outer side of the barrel (5), and a heating wire (40) is provided in the heat preservation cavity.

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